Double-shaft foldable hand-held fan

ABSTRACT

A double-shaft foldable hand-held fan includes a fan head and a fan handle which are rotatably connected up and down. An independent and entirely “capsule-shaped” double-shaft structure is provided between the fan head and the fan handle, the double-shaft structure is mainly formed by a “runway-shaped” shaft seat and two rotary shafts, and the two rotary shafts are fixed at both ends of an inner cavity of the “runway-shaped” shaft seat respectively, wherein a rotary shaft I located at an upper end is connected with the fan head, and a rotary shaft II located at a lower end is connected with the fan handle, and two rotary shafts are disposed at the sides of back surfaces of the fan head and the fan handle at the same time.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No.201922218810.5 with a filing date of Dec. 11, 2019. The content of theaforementioned application, including any intervening amendmentsthereto, are incorporated herein by reference.

TECHNICAL FIELD

The present utility model relates to a foldable hand-held fan, and inparticular to a double-shaft foldable hand-held fan.

BACKGROUND

Currently, with increasing improvement of living standards, consumershave urgent needs to relieve outdoor heat in summer. A type of portableand foldable hand-held fan appears in the market. The fan is designedwith a single rotary shaft structure at a handle so that he handle maybe folded 180 degrees when the fan is carried outside. Therefore, thefan has a more regular overall shape and a smaller occupation area. Inthis way, it is convenient for the consumers to store and carry.

At present, the above single-shaft foldable fan mainly has the followingproblems and defects.

1) Due to the single-shaft structure, the single shaft structure isrequired to protrude from a shell of the fan to fold the fan 180degrees. In this case, a contour of the product is extremely complex andirregular, greatly lowering aesthetics; further, the fan may extremelyeasily hide dusts and dirts during use and is inconvenient to clean.

2) Due to a large impact on circuit design, the single shaft structurehas to be hollowed locally to help an electric wire to pass through therotary shaft. As a result, there will be a case that the electric wireis exposed at the rotary shaft of the product, which will not onlyaffect the aesthetics but also increase the risk of breakage of theelectric wire due to external force.

3) For the single-shaft folding structure, the electric wire is requiredto be folded 180 degrees together with the handle in a folding process.Therefore, a folding aging problem of the electric wire becomes seriousand the electric wire is easily failed due to breakage after slightlymore folding times.

4) A connection part of the single-shaft structure is integrated withthe shell (a fan head or a fan handle) of the product and thus cannot betreated for separate material reinforcement. Therefore, a structuralstrength at the rotary shaft of the product is very weak. The rotaryshaft may be easily subjected to structural breakage after receiving anacting force which is not in a design direction of the rotary shaft,thereby scrapping the product.

SUMMARY

To overcome the above shortcomings of the prior art, the present utilitymodel provides a double-shaft foldable hand-held fan, which, after beingfolded, is beautiful, regular, simple and easy to carry, and may avoidhiding dust and dirt, and its connecting piece has stronger abrasionresistance and strength.

To solve the above technical problem, the present utility model adoptsthe following technical solution: the fan includes a fan head and a fanhandle which are rotatably connected up and down, an independentdouble-shaft structure which is entirely “capsule-shaped” is providedbetween the fan head and the fan handle, the double-shaft structure ismainly formed by a “runway-shaped” shaft seat and two rotary shafts, andthe two rotary shafts are fixed at both ends of an inner cavity of the“runway-shaped” shaft seat respectively, where a rotary shaft I locatedat an upper end is connected with the fan head, and a rotary shaft IIlocated at a lower end is connected with the fan handle, and the tworotary shafts are disposed at the sides of back surfaces of the fan headand the fan handle at the same time.

Compared with the prior art, the double-shaft foldable hand-held fan ofthe present utility model is realized as follows: an entirely“capsule-shaped” double-shaft structure is provided between the fan headand the fan handle, and the double-shaft structure is mainly formed bythe “runway-shaped” shaft seat and two rotary shafts, and the two rotaryshafts are fixed at both ends of the inner cavity of the “runway-shaped”shaft seat respectively, the rotary shaft I located at the upper end isconnected with the fan head, and the rotary shaft II located at thelower end is connected with the fan handle, and thus the two rotaryshafts both rotate 90 degrees oppositely to fold the entire fan 180degrees. Further, since two rotary shafts are disposed at the sides ofback surfaces of the fan head and the fan handle at the same time, thedouble-shaft structure is entirely embedded between the fan head and thefan handle without a protruding structure. In this case, the appearanceof the product is simpler and more regular, and the problem of hidingdust and dirt can be avoided. In addition, the double-shaft structure ofthe present utility model is a separate component independent of the fanhead and the fan handle, and serves only as a connecting piece of thefan head and the fan handle. As a result, separate materialreinforcement is facilitated so that the double-shaft structure itselfhas stronger abrasion resistance and strength. At the same time, theelectric wire between the fan head and the fan handle may be run in theinner cavity of the “runway-shaped” shaft seat to prevent the electricwire from being damaged to some extent.

BRIEF DESCRIPTION OF THE DRAWINGS

The present utility model will be further described below in combinationwith accompanying drawings and examples.

FIG. 1a , FIG. 1b , and FIG. 1c are three-dimensional views of a foldingprocess of an example of the present utility model.

FIG. 2a , FIG. 2b and FIG. 2c are side views of a folding process of anexample of the present utility model.

FIG. 3 is a schematic diagram of running wires according to an exampleof the present utility model.

Numerals of the drawings are described as follows: 1. a fan head, 1-1. aplug, 2. a double-shaft structure, 2-1. a rotary shaft I, 2-2. a“runway-shaped” shaft seat, 2-3. a rotary shaft II, 3. a fan handle,3-1. a socket, 4. a motor, 5. an electric wire, 6. a circuit board, and7. a battery.

DETAILED DESCRIPTION OF THE EMBODIMENTS

To understand the objects, technical solutions and advantages of thepresent utility model more clearly, the technical solutions in examplesof the present utility model will be described clearly and fully belowin combination with accompanying drawings in the examples of the presentutility model. It is apparent that the described examples are merelypart of examples of the present utility model rather than all examples.Other examples achieved by those of ordinary skill in the art based onthe examples in the present utility model without paying creative workshall all fall into the scope of protection of the present utilitymodel.

FIG. 1 and FIG. 2 are schematic diagrams illustrating a structure of apreferred example of the present utility model. A double-shaft foldablehand-held fan in the drawings includes a fan head 1 and a fan handle 3which are rotatably connected up and down. Usually, a surface of the fanhead 1 facing a user is a front surface, and a surface opposite to thefront surface is a back surface. The fan head 1 generally includes a fanblade, a fan cover and a motor 4. The motor 4 is located in a middlepart of the fan blades to drive the fan blades to rotate. The fan bladesare disposed within a cavity formed by a pair of fan covers. Tofacilitate connection, a short rod part is provided at a lower end ofthe fan cover. Further, the fan handle 3 also has a front surface and aback surface which are in the directions of the front surface and theback surface of the fan head 1. An operation switch or a control knob,or the like is usually disposed on the front surface of the fan handle3. A main body of the fan handle 3 is a closed cavity formed by coverplates and buckles, and the cavity may also be divided according tospace to receive a battery 7 and a circuit board 6.

As shown in FIG. 1 and FIG. 2, in this example, an independent andentirely “capsule-shaped” double-shaft structure 2 is provided betweenthe fan head 1 and the fan handle 3, the double-shaft structure 2 ismainly formed by a “runway-shaped” shaft seat 2-2 and two rotary shafts,and the two rotary shafts are fixed at both ends of an inner cavity ofthe “runway-shaped” shaft seat 2-2 respectively, where a rotary shaft I2-1 located at an upper end is connected with the fan head 1, and arotary shaft II 2-3 located at a lower end is connected with the fanhandle 3, and the two rotary shafts are disposed at the sides of theback surfaces of the fan head 1 and the fan handle 3 at the same time.

This example is further improved as follows: a plug 1-1 and a socket 3-1are provided at the front surfaces of the fan head 1 and the fan handle3 respectively to achieve cooperation. That is, engageable componentsare provided at a lower end of the short rod part of the fan head 1 anda top end of the front surface of the fan handle 3 respectively torealize firmer positioning when the fan head 1 and the fan handle 3 areengaged, and disengagement may be achieved by slightly applying a forcewhen it is desired to fold the fan.

Further, a groove may be opened at corresponding positions of the backsurfaces of the fan head 1 and the fan handle 3 respectively. A mountinghole is provided at both inner sides of the groove, and both ends of thedouble-shaft structure 2 are disposed within the grooves and connectedto a hollow rotary shaft through the mounting holes. The grooves enablethe double-shaft structure 2 to be more tightly connected with the fanhead 1 and the fan handle 3, thereby saving space and bringing a betterfolding effect.

As shown in FIG. 3, a further optimized design solution may be obtainedas follows: the rotary shaft I 2-1 and the rotary shaft II 2-3 are bothhollow rotary shafts, and an electric wire 5 between the fan head 1 andthe fan handle 3 is run within shaft holes of the hollow rotary shafts.More preferably, the electric wire 5 runs into the shaft hole of thehollow rotary shaft located at the upper end, and runs out of the shafthole of the hollow rotary shaft located at the lower end of the sameside to connect the motor 4 within the upper fan head 1 with the battery7 within the lower fan handle 3. When a circuit board 6 exists, theelectric wire 5 is also connected to the circuit board 6 within the fanhandle 3. With such in-shaft wire running manner, the electric wire 5will not be exposed nor damaged by contact of an external force. Theelectric wire 5 is rotated and twisted 90 degrees respectively atdifferent positions in two segments. In this case, the electric wire 5has stronger aging resistance compared with the case that the electricwire 5 is folded 180 degrees at one position. Thus, the case that theelectric wire 5 is broken due to excessive folding times can bebasically avoided.

A preferred solution of a material is as follows: the double-shaftstructure 2 is made with a reinforced material of PC plastic and 30 GF%, or made with a reinforced material of PPS resin. Therefore, thedouble-shaft structure 2 has better abrasion resistance and strength.

The above descriptions are merely preferred examples of the presentutility model but not intended to limit the present utility model in anyform, and any simple modifications and equivalent substitutions made tothe above examples based on the technical essence of the present utilitymodel shall all be encompassed in the scope of protection of the presentutility model.

I claim:
 1. A double-shaft foldable hand-held fan, comprising a fan head(1) and a fan handle (3) which are rotatably connected up and down,wherein an independent and entirely “capsule-shaped” double-shaftstructure (2) is provided between the fan head (1) and the fan handle(3), the double-shaft structure (2) is mainly formed by a“runway-shaped” shaft seat (2-2) and two rotary shafts, and two rotaryshafts are fixed at both ends of an inner cavity of the “runway-shaped”shaft seat (2-2) respectively, wherein a rotary shaft I (2-1) located atan upper end is connected with the fan head (1), and a rotary shaft II(2-3) located at a lower end is connected with the fan handle (3), andthe two rotary shafts are disposed at the sides of back surfaces of thefan head (1) and the fan handle (3) at the same time.
 2. Thedouble-shaft foldable hand-held fan according to claim 1, wherein a plug(1-1) and a socket (3-1) are provided at front surfaces of the fan head(1) and the fan handle (3) respectively to form cooperation.
 3. Thedouble-shaft foldable hand-held fan according to claim 1, wherein agroove is provided at corresponding positions of back surfaces of thefan head (1) and the fan handle (3) respectively, a mounting hole isprovided at both inner sides of the groove, and both ends of thedouble-shaft structure (2) are disposed within the grooves and connectedto a hollow rotary shaft through the mounting holes.
 4. The double-shaftfoldable hand-held fan according to claim 3, wherein the rotary shaft I(2-1) and the rotary shaft II (2-3) are both hollow rotary shafts, andan electric wire (5) between the fan head (1) and the fan handle (3)runs within shaft holes of the hollow rotary shafts.
 5. The double-shaftfoldable hand-held fan according to claim 4, wherein the electric wire(5) is run into the shaft hole of the hollow rotary shaft located at theupper end, and run out of the shaft hole of the hollow rotary shaftlocated at the lower end of the same side to connect a motor (4) withinthe upper fan head (1) with a battery (7) within the lower fan handle(3).
 6. The double-shaft foldable hand-held fan according to claim 1,wherein the double-shaft structure (2) is made with a reinforcedmaterial of PC plastic and 30 GF %, or is made with a reinforcedmaterial of PPS resin.